Terming the protest by West Bengal Chief Minister Mamata Banerjee over the presence of armymen at toll plazas as cheap political stunt, Union minister M Venkaiah Naidu today said an attempt was being made to drag the Army into an unnecessary controversy. Talking to reporters outside Parliament, the Information and Broadcasting minister said, This is nothing but a cheap political stunt to defame the government and dragging the Army into an unnecessary controversy where none exists.